Pfannenberg DTFI 9021 - Manual (Page 12)

12 085 408 065c
Caution!
If there is excessive condensate during normal operation
check the sealings of the switch cabinet.
We recommend that you install a door contact switch to
switch off the cooling unit, when the door of the switch
cabinet is opened, in order to prevent excessive
condensate.
8 Installation
8.1 General
• The installation place for the switch cabinet must be selected
such that proper ventilation of the cooling unit is ensured.
• The single units or the units and the wall must be at a distance
of 200 mm at least.
• Air circulation in the switch cabinet must not be impeded by
built-in parts.
• The unit must be disconnected from the power supply!
• The site of installation must be protected against contamination.
Caution!
If the cooling unit is mounted on an switch cabinet door, it
must be confirmed that the hinges can support the additio-
nal weight or that the switch cabinet will not topple over
when the door is opened.
Caution! Chips may damage the switch cabinet.
If thenecessary cut-outs are only made in the switch cabinet
when the cooling units are installed, swarf must be
prevented from entering the switch cabinet.
8.2 Installation of built-in cooling unit DTI 9021
The mounting surface of the switch cabinet is to be provided with
cutout(s) and holes for air ventilation openings and for securing
the unit according to the accompanying sheet.
The drawing on the accompanying sheet also shows the posi-
tion of the electrical connections and ventilation openings.
1) Make cut-out(s) and drillings for the cooling unit, if not already
provided in the switch cabinet (see drawing on accompanying
sheet).
Remove burrs from the cut edges.
2) Insert the cooling unit (1) into the cut-out from the outside and
push through until the unit seal engages with the switch cabinet
(2).
3) Fix the cooling unit on the inside of the switch cabinet by means
of the M6 nuts (A) provided. Tighten M 6 (D) so that the seal is
compressed to a thickness of 2 mm.
4) Remove the device hood (C) in the appropriate direction of
movement Y and Z by loosening the screws (B) (do not remove
the screws as a safeguard against loss).
Remove the earth cable from the hood if necessary.
5) Fit the condensate drain tube to the pipe (see accompanying
sheet). Lay the tube with a downward fall. Shorten as required.
If the tube has been extended by means of a connector and a
further tube, the additional weight of the tube must be
appropriately supported so that it does not become constricted.
6) Connect the device hood (C) to the earth cable and then fix to
the cooling unit by means of the screws (B).
7) Clamp cables in accordance with the connection diagram
(see rear of unit) to the plug-in connectors (enclosed
package) and connect to the unit.
- lead cross-section: 0.5 – 2.5 mm², or AWG20 – AWG14
(for the selection of the cable cross-section the relevant pro-
visions are to be taken into account).
8) Connect the cooling unit to the power source (see section 8.4).
8.3 Installation of built-in cooling unit DTFI 9021
The mounting surface of the switch cabinet is to be provided
with a rectangular cutout as shown on the accompanying sheet.
The drawing on the accompanying sheet shows the location of
the ventilation openings.
1) Make cutout for the cooling unit, if not already provided in the
switch cabinet (see drawing on accompanying sheet).
Remove burrs from the cut edges
2) Remove the device hood (C) in the appropriate direction of
movement Y and Z by loosening the screws (B) (do not remove
the screws as a safeguard against loss)
(see accompanying sheet).
Remove the earth cable from the hood.
3 ) Insert the cooling unit (1) into the cut-out from the inside and
push through until the unit seal engages with the switch cabinet
(2). The snap fastener (3) on the top of the unit will audibly
engage and prevent the unit from falling out.
1 Cooling Unit DTFI
2 Switch cabinet wall or door
3 Securing spring
4 Condensate drain tube
4) Fit the clamping plates (A) and screws included in the
component pack to the outside of the switch cabinet and tighten
so that the seal is compressed to a thickness of 2 mm.
5) Fit the condensate drain tube to the pipe (see accompanying
sheet). Lay the tube with a downward fall. Shorten as required.
If the tube has been extended by means of a connector and a
further tube, the additional weight of the tube must be
appropriately supported so that it does not become constricted.
6) Connect the device hood (C) to the earth cable and then fix
to the cooling unit by means of the screws (B).
1 Cooling Unit DTI
2 Switch cabinet wall or door